Origin of the name ARROSA.
Etymology of the
name ARROSA.
Meaning of the baby name ARROSA.

ARROSA. From
the Basque vocabulary word arrosa, meaning "rose."
(Le paroisses du pays basque, Haristoy, v.1, 1895). This name
appears twice in Kenyon's Character Naming Sourcebook (1994), under
Basque and Latin.
There is a commune in the
Pyrénées-Atlantiques department in southwestern France
called Saint-Martin-d'Arrosa. (Wiki)